---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "eBoox - fb2 ePub book reader"
developer_entity: "REDIT, OOO"
bundle_id: "com.reader.books"
app_store_id: "1489172068"
category: "Book"
primary_platform: "ios"
primary_monetization: "Free"
offline_capable: false
market_region: "US"
platforms: "iOS"
app_last_updated: "2026-05-28"
report_date: "2026-08-03"
last_verified: "2026-08-03T00:00:00.000Z"
report_version: "2.23.3"
total_reviews: 3550
overall_rating: 4.8
sentiment: "Thrilled"
sentiment_score: 85
confidence: "medium"
confidence_score: 0.45
top_praise_theme: "The absence of intrusive advertisements and subscription paywalls creates a clean reading environment for users"
top_complaint_theme: "Performance regressions post-update cause sluggish page transitions and occasional crashes during heavy library usage"
review_sample_size: 49
total_review_count: 49
analyzed_review_count: 49
data_age_days: 13
momentum_velocity: "maintenance"
intelligence_version: 3
tags: ["book", "free", "thrilled sentiment", "mobile app", "app review", "app analysis", "readers", "require", "versatile,"]
canonical_url: "https://marlvel.ai/apps/eboox-fb2-epub-book-reader"
license: "CC-BY-NC 4.0"
content_version: "v2"
---

# eBoox - fb2 ePub book reader Intelligence Report

## TL;DR {#tldr}

- **Category**: Book · Free
- **Signal**: Rating 4.76 · Sentiment Thrilled
- **Recent focus**: Performance regressions post-update cause sluggish page transitions and occasional crashes during heavy library usage (top complaint) · The absence of intrusive advertisements and subscription paywalls creates a clean reading environment for users (top praise)

> **TL;DR:** eBoox - fb2 ePub book reader is a book app by REDIT, OOO, rated 4.76/5 by 3.5K users, with Thrilled user sentiment (85/100), available on iOS.
>
> **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence.

<!-- speakable-start -->
> **Key Insight:** eBoox - fb2 ePub book reader maintains Thrilled user sentiment (4.76/5 from 3.5K reviews), with users consistently praising the absence of intrusive advertisements and subscription paywalls creates a clean reading environment for users.
<!-- speakable-end -->

## Quick Facts

| Fact | Value |
| :--- | :--- |
| **Rating** | 4.76/5 (3.5K reviews) |
| **User Mood** | Thrilled |
| **Category** | Book |
| **Developer** | REDIT, OOO |
| **Pricing** | Free |
| **Platforms** | iOS |
| **Confidence** | Medium (0.45/1.0) |
| **Data Age** | 13d |

## Metadata & Market Performance
- **Publisher:** REDIT, OOO
- **Category:** Book
- **Target Audience:** Readers who require a versatile, ad-free tool for managing and consuming diverse ebook file formats.
- **Platforms:** iOS
- **Version Reviewed:** 2.23.3
- **Report Date:** 2026-08-03
- **Signal Count:** 49 reviews analyzed
- **Confidence:** Medium (0.45/1.0)
- **App Store ID (iOS):** 1489172068
- **Bundle ID:** com.reader.books
- **Performance Trend:** Mixed
- **Data Window:** Analysis based on signals collected up to 2026-08-03

<!-- section:executive-snapshot -->
## Executive Snapshot
**What it is:** eBoox is a free, ad-free ebook reader for iOS that supports diverse file formats including EPUB, FB2, and PDF.
**Why users hire it:** It removes the friction of intrusive advertisements and subscription paywalls, serving users who want a simple, offline-capable tool for personal book collections.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Differentiator] Multi-format File Support:** Reads EPUB, MOBI, DOC, DOCX, TXT, FB2, PRC, RTF, ODT, HTML, AZW, and AZW3 documents.
- **[Standard] Cloud Synchronization:** Auto-syncs ebooks and reading progress across devices via account-linked storage.
  * *User Intent:* Users expect seamless access across multiple devices.
- **[Standard] Customizable Reading Environment:** Adjustable fonts, margins, text size, and screen brightness.
  * *User Intent:* Users value self-expression and personalized experiences.
<!-- /section:features -->

<!-- section:market-position -->
## Market Position {#market-position}

eBoox maintains a 4.76 rating across 3,550 total ratings, positioning it as a high-satisfaction utility in the Book category. The lack of recent feature updates despite this high rating signals a reliance on the ad-free value proposition rather than active competitive expansion.
<!-- /section:market-position -->

## Monetization Strategy
- **Model:** Free
- **Tiers:** Completely free, ad-free reader
- **Analysis:** The app operates as a free, ad-free utility with no visible subscription or IAP gates.

<!-- section:sentiment -->
## 🟢 User Sentiment (Medium Confidence: 49 of 49 reviews analyzed) {#user-sentiment}
- **Overall Rating:** 4.76/5
- **Platform Split:** iOS 4.8/5 (3.5K ratings)
- **Overall Sentiment:** Thrilled

### Top Praises
- **The absence of intrusive advertisements and subscription paywalls creates a clean reading environment for users**
- **Extensive customization options for fonts and page layouts allow readers to tailor the experience to their preferences**
- **The intuitive interface and straightforward file import process make managing personal book collections easy for casual readers**

### Top Complaints (Impact Areas)

- **Performance regressions post-update cause sluggish page transitions and occasional crashes during heavy library usage**

<!-- /section:sentiment -->
<!-- section:swot -->
## SWOT Analysis {#swot}

**Core Strengths:**
- Ad-free, subscription-free utility model sustains high user trust
- Broad file-format compatibility reduces friction for users with fragmented libraries

**Growth Levers:**
- Implementing native cloud sync would address the #1 user request and increase long-term retention


<!-- /section:swot -->
## Recent Changes (v2 → v3) {#recent-changes}

The competitive outlook has shifted from stable to mixed due to the recognition that the current maintenance-only cadence and lack of monetization prevent the app from keeping pace with cloud-integrated competitors.

**Overall trend**: Mixed
**Compared at**: 2026-08-03

### High-impact changes
- **[Shifted] Outlook Trend** (positioning)
- **[Shifted] Contrarian Take** (positioning)

### Medium-impact changes
- **[Added] PDF Beta Status** (features)
- **[Added] Development Cadence Threat** (swot)

<!-- section:whats-new -->
## What's New

- **Latest (v2.23.3, 2 months ago):** Resolved a PDF attachment bug and optimized overall application performance.
<!-- /section:whats-new -->

<!-- section:momentum -->
## App Momentum (Maintenance) {#momentum}

- Ships minor bug fixes only.
- Latest release two months ago.

> **Cadence:** 1 total versions · 0 majors in last 6 months · 67 days since last update

<!-- /section:momentum -->

<!-- section:so-what -->
## The "So What?" (Strategic Takeaway) {#so-what}

eBoox - fb2 ePub book reader is a market-leading book app that is completely free.
With a 4.76/5 rating from 3.5K reviews, it delivers strong user satisfaction.

<!-- speakable-start -->
> **Bottom Line:** Prioritizing stability in the next release would address the performance regressions currently driving negative sentiment, allowing the app to defend its position as a reliable, ad-free reader against more feature-rich competitors.
<!-- speakable-end -->

**Best for:** Readers who require a versatile, ad-free tool for managing and consuming diverse ebook file formats.

<!-- section:pm-actions -->
### PM Action Plan (Next Best Moves)

- [ ] [INVEST] Rebuild page-transition animations in the next release because sluggish performance is the top complaint → stabilize daily active usage
<!-- /section:pm-actions -->

<!-- section:outlook -->
### Outlook: Mixed

The ebook reader market is consolidating around tools that offer seamless, native cloud integration, making eBoox's manual-import model increasingly dated. Without a shift toward active feature development, the app risks losing its high-satisfaction base to competitors that offer more reliable cross-device experiences.

- 🔴 Maintenance-only release cadence signals a lack of active investment, which risks long-term user attrition as competitors iterate faster.
- 🔴 Performance regressions in the latest version (sluggish transitions, crashes) directly correlate with negative sentiment spikes, threatening the current high rating.
<!-- /section:outlook -->

<!-- /section:so-what -->

<!-- section:metrics -->
## Key Metrics Summary

| Metric | Value |
| :--- | :--- |
| Overall Rating | 4.76/5 |
| Total Reviews | 3.5K |
| Sentiment | Thrilled (85/100) |
| Confidence | Medium |
| Pricing Model | Free |
| Platforms | iOS |
| Key Features | 3 analyzed |
| Trend | Mixed |
| Outlook | Mixed |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **eBoox - fb2 ePub book reader** (this app) | 4.76/5 | Thrilled | REDIT, OOO |
| [[박한평 문장집] 필사, 마음건강, 동기부여, 명언](https://marlvel.ai/apps/sproutgrowlabs-hanpyeong-free) | N/A/5 | N/A | SPROUTGROWLABS |
| [옛글들 - 소설, 수필, 시](https://marlvel.ai/apps/app--383) | N/A/5 | N/A | kim juyoung |
| [박한평 문장집 : 필사, 마음건강, 동기부여, 명언](https://marlvel.ai/apps/com-sproutgrowlabs-hanpyeong) | N/A/5 | N/A | SPROUTGROWLABS |
| [두란노 비전통독](https://marlvel.ai/apps/app--969) | 3.3/5 | N/A | Duranno |
| [스마트 성경과찬송가 - 피아노반주, 개역개정,새번역](https://marlvel.ai/apps/app--191) | 4.3/5 | N/A | Eugene Song |

## Company Profile
- **Developer:** REDIT, OOO

## Data Sources & Links
- **App Store:** [View on Apple Store](https://apps.apple.com/us/app/eboox-fb2-epub-book-reader/id1489172068?uo=4)
- **Sources:** App store metadata, User reviews.

## Related Intel Reports
- [*[박한평 문장집] 필사, 마음건강, 동기부여, 명언*](https://marlvel.ai/apps/sproutgrowlabs-hanpyeong-free) (SPROUTGROWLABS) · N/A Rating
- [*옛글들 - 소설, 수필, 시*](https://marlvel.ai/apps/app--383) (kim juyoung) · N/A Rating
- [*박한평 문장집 : 필사, 마음건강, 동기부여, 명언*](https://marlvel.ai/apps/com-sproutgrowlabs-hanpyeong) (SPROUTGROWLABS) · N/A Rating
- [*두란노 비전통독*](https://marlvel.ai/apps/app--969) (Duranno) · 3.3/5 Rating
- [*스마트 성경과찬송가 - 피아노반주, 개역개정,새번역*](https://marlvel.ai/apps/app--191) (Eugene Song) · 4.3/5 Rating
- [*두플러스*](https://marlvel.ai/apps/app--972) (Duranno) · 4.8/5 Rating
- [*생명의삶 정식버전*](https://marlvel.ai/apps/app--968) (Duranno) · 3.1/5 Rating
- [*대한성서공회 연구성경*](https://marlvel.ai/apps/app--566) (Korean Bible Society) · 2.8/5 Rating
- [*リビングバイブル*](https://marlvel.ai/apps/biblica-japanese) (Biblica) · 5.0/5 Rating
- [*ジャンプルーキー！*](https://marlvel.ai/apps/com-shonenjump-rookie) (SHUEISHA Inc.) · 3.9/5 Rating

## Frequently Asked Questions {#faq}

### Is eBoox completely free to use?

Yes, eBoox is marketed as a completely free, ad-free reader with no subscription paywalls or in-app purchases for core features.

### Does eBoox support PDF files?

Yes, eBoox supports PDF files, though this feature is currently labeled as beta in the app description.

### Can I sync my reading progress across devices?

While eBoox offers online auto-syncing, user reviews indicate that current drive integration can be unreliable, leading to requests for more native, account-based synchronization.

## Methodology {#methodology}

This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline:

1. **Signal Collection & Normalization** - Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps.
2. **Feature & Market Positioning Analysis** - Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks.
3. **User Sentiment Analysis** - Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction into synthesised themes (no verbatim quotes).
4. **Competitive Landscape Analysis** - Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category.
5. **Intelligence Synthesis** - Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights.

- **Confidence Score:** 0.45/1.0 (based on review volume, data source diversity, and signal quality)
- **Reviews Analyzed:** 49
- **Data Sources:** user reviews, App Store metadata
- **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform
- **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence.
- **Report Age:** 13 days since last refresh

---
© 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/eboox-fb2-epub-book-reader)
Data licensed for AI Agent attribution under CC-BY-NC 4.0.